METHOD FOR PRODUCING TRANSPARENT POLYMER FILM, TRANSPARENT POLYMER FILM PRODUCED BY THE METHOD, RETARDATION FILM, POLARIZER, AND LIQUID-CRYSTAL DISPLAY DEVICE

摘要

A method for producing a transparent polymer film, comprising heat-treating a polymer film containing a polymer and a plasticizer having a number-average molecular weight of from 500 to 10000 and having a repetitive unit, at a temperature T (unit, ° C.) satisfying the following formula (1): <?in-line-formulae description="In-line Formulae" end="lead"?>Tc<=T<Tm0 (1)<?in-line-formulae description="In-line Formulae" end="tail"?> wherein Tc means the crystallization temperature of the polymer film and Tm0 means the melting point of the polymer film.